模拟创建进程（建立一个记录型数据结构PCB）：给出进程标识、状态、到达时间、运行时间等用先来先服务调度算法进行模拟实现-simulation creation process (to establish a record type data structure PCB) : the process of identification is given, state, arrival time, the time spent running a first-come first-service scheduling algorithm Simulation